Numerical Study of a Dump Diffuser Flow Field in a Short Annular Combustor PUBLIC ACCESS

[+] Author Affiliations
Hu Zhiben, Hua Guangshi

Northwestern Polytechnical University, Xian, China

Paper No. 85-IGT-88, pp. V002T04A009; 7 pages
  • ASME 1985 Beijing International Gas Turbine Symposium and Exposition
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels
  • Beijing, People’s Republic of China, September 1–7, 1985
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7943-6
  • Copyright © 1985 by ASME


A computer program for solving the two-dimensional steady flow field of the dump diffuser is made based on the streamtube method and SIMPLE (Semi–Implicit Method for Pressure linked Equations) algorithm. Some concrete measures or improvements are developed to treat the irregularly shaped calculation domain, the inlet distribution of k and ε to use the variable relaxation factors. The flow field in a short dump diffuser model with pre–diffuser and blind flame tube is calculated with the program. The calculated results agree well with the experimental data.

Copyright © 1985 by ASME
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